Ablation would clean out the surface of your uterus, and take with it anything microscopic and questionable. However, if you are right next door to menopause, were it me with your history, I would go for the hysterectomy to protect myself from cancer there/ovaries too. This is a difficult question for you to answer......I hope this helps you. Good Luck!
I am not sure but I can tell you that I would question the hell outta my doctor before I did either.